#!/usr/bin/env python3
"""
脚本名称：ch32_exe.py
功能描述： 演示 for 循环和列表
作者：Gavin
创建日期：2022-05-06
版本：1.0
依赖库：无
使用方法： python ch32_exe.py
"""

the_count = [1, 2, 3, 4, 5]
fruits = ['apples', 'oranges', 'pears', 'apricots']
change = [1, 'pennies', 2, 'dimes', 3, 'quarters']

# this first kind of for-loop goes through a list
for number in the_count:
    print("This is count %d" % number)

# same as above
for fruit in fruits:
    print("A fruit of type: %s" % fruit)

# also we can go through mixed lists too
# notice we have to use %r since we don't know what's in it
for i in change:
    print("I got %r" % i)

# we can also build lists, first start with an empty one
elements = []
# then use the range function to do 0 to 5 counts
for i in range(0, 6):
    print("Adding %d to the list." % i)
    # append is a function that lists understand
    elements.append(i)

# now we can     print(them out too
for i in elements:
    print("Element was: %d" % i)

for i in range(0, 6):
    print("Adding %d to the list." % i)
    # append is a function that lists understand

print(elements.count(1))
print(elements[3])
elements.insert(6, 10)
print(len(elements))
print(elements)
